The invention provides a high-voltage power-on and power-off control method for an electric tractor, and the method comprises the following steps: S1, receiving a power-on request, and carrying out the fault detection of a whole vehicle through a VCU; s2, the VCU sends a fault detection result to a battery management system, and the battery management system controls a main negative relay to be closed according to the fault detection result; s3, the VCU controls a pre-charging relay to be closed to pre-charge the motor according to the state of the main negative relay; s4, the VCU detects the voltage at the two ends of the motor and the voltage at the two ends of the battery; s5, controlling a main positive relay to be closed and a pre-charging relay to be disconnected according to a voltage detection result to complete power-on; according to the vehicle state, the fault level and the driving requirement, the main positive, the main negative and the power supply of the high-voltage system are controlled to be switched on and switched off, all component actuators are accurately controlled in the comprehensive application environment, the service life of high-voltage components is prolonged, the fault risk is reduced, and high-voltage power-on of the electric tractor can be safely and efficiently controlled in an energy-saving mode.
本发明提供了一种电动拖拉机高压上下电控制方法,包括以下步骤:S1.接收上电请求,VCU对整车进行故障检测;S2.VCU将故障检测结果发送电池管理系统,电池管理系统根据故障检测结果控制主负继电器闭合;S3.VCU根据主负继电器状态控制预充继电器闭合对电机进行预充电;S4.VCU对电机两端电压和电池两端电压进行检测;S5.根据电压检测结果控制主正继电器闭合、预充继电器断开,完成上电;根据车辆状态、故障等级和驾驶需求对高压系统主正、主负、电源的接通和断开控制,在综合应用环境下精确控制各部件执行器,提高高压部件使用寿命并降低故障风险,能够安全、高效、节能地控制电动拖拉机的高压上电。
High-voltage power-on and power-off control method for electric tractor
一种电动拖拉机高压上下电控制方法
2024-11-15
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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